ENGINE AR-CORE 2558712 - Caterpillar

Illustration 1 g01120074
Propel diagnostic lamp - right side of operator station panel
The propel diagnostic lamp on the operator station panel is the primary indicator to operator or the technician there is a problem with the Propel Electronic Control System. When the propel diagnostic lamp is ON, the ECM has diagnostic information available.
Start troubleshooting the Propel Electronic Control System by operating the machine and checking for functional problems.
Observe the propel diagnostic lamp on the operator station panel.
If the propel diagnostic lamp is ON, diagnostic information is available. Proceed to Step 4.
If the propel diagnostic lamp is OFF, diagnostic information is not available. Resume normal machine operation.
If the propel diagnostic lamp was ON for a short period of time and then turned OFF, diagnostic information is available, however, the code is not active at this time. At the ECM display, enter service mode 1. Record the inactive diagnostic code that was issued, then clear the code. The problem was probably caused by a condition of the machine operation that has been corrected. If the same code becomes active again, perform the troubleshooting procedure for the code that is in the “Diagnostic Code Procedures” section in this manual.
Stop the machine. Go to the propel ECM and observe the readout.
If the readout shows a "P01", "P02", or "P03" code, an operator error has been recorded. Refer to the "Error Codes" module in this manual. If "P - -" is dispalyed on the ECM display, no operator error codes exist.
If the diagnostic code present indicator on the ECM display is ON, a diagnostic code for the propel electrical system is active. Enter service mode 1. Observe the CID FMI code. Perform the diagnostic procedure that is listed in the “Diagnostic Code Procedures” section in this manual for the active code.